International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 03 | Mar 2024
p-ISSN: 2395-0072
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Performance Of Bitumen Mixes with Partial Replacement of Aggregates With Construction And Demolition Waste And Bitumen With Molasses Dr. D. Koteswara Rao1, Sajida Sulthana Mohammed2, Uriti Tarun3, J. Jayaprakash4, K.Alekhya Sahithi5, V.Kathyayani6 1Professor, Head Of The Civil Engineering Department, OSD To Hon’ble Vice Chancellor, University College Of
Engineering Kakinada(A), Kakinada, Andhra Pradesh, India
2Assistant Professor(C), Department Of Civil Engineering, University College Of Engineering Kakinada(A) ,
Kakinada, Andhra Pradesh , India
3,4,5,6U.G Students, Dept. Of Civil Engineering, University College of Engineering Kakinada(A), Kakinada, AP, India
-------------------------------------------------------------------- ***---------------------------------------------------------------------pavement construction. They are exploring waste and locally Abstract - The management of the enormous quantities of
available materials to replace natural aggregates to the extent possible in view of cost and preservation for better and essential uses. Also, when such materials are used, sustainability needs to be ensured. With the use of these materials, the environment is highly benefited in terms of natural resource conservation, optimization of landfill use, savings in waste-dumping charges, possible emission reductions, and savings in energy use. Concrete is a very common material for buildings and other structures. Demolition of concrete structures because they have attained their expected life or for other reasons is a common feature in urban areas and on large project sites. This creates quantities of construction and demolition (C&D) waste. C&D wastes, when recycled and reused as aggregates in new construction, are collectively known as recycled concrete aggregate (RCA). A number of studies have sought potential uses for these materials in construction. To date, only limited literature is available on the use of RCA in bituminous mixes for road construction. Because the physical, chemical, and mechanical properties of RCA are different from those of conventional aggregates, extensive research is needed to substantiate RCA’s suitability for this purpose. In general, RCA is rough, porous, flat, and irregular in frontage shape. It also has low specific gravity along with high porosity and water absorption compared with natural coarse stone aggregate (Lee et al. 2012; Perez et al. 2012). Bitumen, a viscoelastic material, is the lone deformable element in a bituminous paving structure and plays a very important role in pavement behavior. The most important properties of a bituminous mixture are its stability and flow. Optimum stability can handle traffic requirements sufficiently and prevent excess rutting (Kalantar et al. 2012). As for the general performance of bituminous pavement, distress occurs in hot climates as rutting and in cold climates as cracking due to the sensitivity of bitumen and bituminous mixes to lower temperatures and traffic. To overcome these problems in a flexible pavement, the performance of either the bitumen or the mix must be improved. A significant amount of research has been carried out to enhance the properties of these two components in different ways for conventional bituminous paving mixes. Modification of bitumen using molasses to improve binder properties over a
construction and demolition (C&D) materials produced in urban areas is becoming an increasingly difficult problem. In keeping with these ideas, this study recommends a suitable proportion of C&D waste to be used in bituminous mixes and focuses on using RCA (recycled concrete aggregate) to improve bituminous mix effectiveness in terms of mechanical, volumetric, and moisture sensitivity. The results of this experiment show that at the optimum bitumen and construction and demolition waste levels, respectively, the marshal stability values increased from the conventional mix to the improved mix. From a conventional mix to a modified mix, flow values are decreased (4.4mm -3.4mm shown in 6.2 and 7 sections). From the results, it is observed that 6% bitumen and 20% C&D waste are suitable to prepare bituminous mix surface layers for medium and light traffic conditions, whereas for heavy and very heavy traffic conditions strength is not sufficient and another material must be used as a partial replacement, so molasses was chosen as the partial replacement of bitumen sugar molasses, the addition material investigated in this study, it obtained by boiling sugarcane juice and removing sugarcane crystals so that a thick brown syrup is obtained. Molasses is a relatively cheap material and has not been used as a bitumen modifier before. A material was synthesized using sugar cane juice. The base bitumen was modified with molasses and construction and demolition waste separately to investigate the effects of those modifications on bitumen and bituminous mixture properties by laboratory tests, including viscosity, penetration, softening point, ductility, and Marshall Stability. Key Words: Bituminous Mix, Molasses, Construction and Demolition Waste, Marshall Stability, Softening Point
1.INTRODUCTION As traffic demand increases rapidly along with increasing axle loads, there is a requirement for a huge quantity of highway construction materials. Aggregates obtained by processing natural stone form the major portion of these materials. Because natural stone resources are depleting very quickly, highway engineers are concerned about meeting the high demand for natural aggregates for
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